After investigating further, I realize it was a bird mite. I have found some nymphs too and there has been a bird nest over my apartment for 2 months.

Thanks Adam I get your points. It’s reinsuring. I can’t see eight legs on my photo and on other photos / videos I took. How come?

And do you know what tick has this color and body shape? I have googled photos of ticks and can’t find one that looks similar.

Thanks!

OK thanks! How can we be sure it is not a bed bug?

Insect found on my bed. Size is slightly more than 1 mm (c. 1.3 mm).